Locomotive-boiler.



Patented Oct. 30, I900.- F. BURGER & H. M. WILLIAMS.

LOCOMOTIVE BOILER.

\ (Application filed July 12, 1899. Renewed Mar. 31, 1900.)

(No Model.)

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- No. 660,557. Patented Oct. 30, I900.

F.'BURGER' & H. m WILLIAMS.

LDCOMOTIVE BOILER.

Application filed July 12, 1899. Renewed Mar. 31, 1900.)

2 Shady-Sheet- 2.

(No Model.)

Q viCnemea UNITED STATES PATENT OFFICE.

FRANZ BURGER AND HENRY M.- WILLIAMS, OF FORT WAYNE, INDIANA; SAID BURGER ASSIGNOR OF ONE-HALF OF HIS RIGHT TO SAID WILLIAMS.

LOCOMOTlVE-BOILER.

SPECIFICATION forming part of Letters Patent N 0. 660,557, dated October 30, 1900.

Application filed July 12, 1899. Renewed March 31, 1900. Serial No. 11,019. (No model.)

To all whom it may concern:

Be it known that we, FRANZ BURGER and HENRY M. WILLIAMS, citizens of the United States, residing at Fort Wayne, in the county of Allen and State of Indiana, have'invented certain new and useful Improvements in L0- comotive-Boilers, of which the following is a specification.

Our invention relates to locomotive-boilers, and has for its objects to prevent radiation, to secure the advantages resulting from condensing the steam passing from the exhaust, to avoid the waste resulting from the ordinary action of the exhaust, and to secure a better combustion, to which ends the boiler and its adjuncts are constructed, as fully set forth hereinafter and as illustrated in the accompanying drawings, in which Figure 1 represents a sectional view through the boiler, blower, condenser, and fire-box. Fig. 2 is a transverse sectional view through the sun oke-box and condenser or heater at the line A B. Fig. 3 is a horizontal view of the fire-box partially above the grate-bars, as indicated by the line C D, and partially below the grate-bars, as shown by the lineE F; and Fig. 4% is an enlarged view showing the rod connection between the blower, engine, and exhaust throttle-Valve by which the engineer can adjust the same.

A is the boiler of the locomotive, provided with the fire-box B and usual horizontal tubes and with a smoke-box X communicating with the stack Y and closed at the end by a cap 5, which, as shown, is conical.

The exhaustpipe 29 extends from the valvecasing of the cylinder 0 and is providedlwith a throttle 30, below which the exhaust-pipe communicates with the forwardly-extending channel or pipe 20, communicating with the bottom of an extension 3 on the jacket 3 of the boiler. This jacket, instead of consisting of lagging in contact with the outer surface of the shell of the boiler, is arranged at a distance' therefrom, leaving an intermediate surrounding chamber 4. Into this chamber may be forced the exhaust in whole or in part or hot gases or hot air in any suitable manner to thereby efiect in part the purpose of the usual lagging, to prevent radiation of heat, and in part to supply air to the space below "a blower of any suitable character.

the grate-bars 14. As shown, the latter result is effected by means of longitudinal tubes 13 under the grate-bars, transversely connected by smaller tubes 15, perforatedat their upper sides and so placed that the air forced out of the perforations 16 can find its way between the spaces of the grate-bars. The ash-box 17 is preferably closed, but can be opened by the usual hinged doorlS. When this construction is employed, the air may be forced backward through the chamber 4 in any suitable manner, one means being hereinafter described.

The casing of the smoke-box is extended beyond its normal termination to form a chamher or receptacle for a condenser D of any suitable character. As shown, the said condenser consists of a series of vertical tubes 7, a portion of which communicate with a curved chamber 19 below inclined partitions 21 in the space between the outer shell 3 and the inner shell 6. The remaining portion of the tubes communicate with a lower curved chamber 23,from which extends a channel .24 to a nozzle 25, surrounding the exhaustthe chamber 23, and thence through the exhaust-channel 2 1' to the nozzle 25 and upward through the stack.

In order to more effectually condense the exhaust-steam in its passage through the tubes7, we provide means for cooling the latter. Different means maybe employed for this purpose, but-preferably we make useof For in stance a revolving blower-fan 11 is arranged in an annular casing 8 and driven by an engine 9 and serves to insure the passage of air across the tubes of the condenser, and this may also be the means of supplying air below the grate-bars. Thus the air is deflected by the conical cap 5 into openings 12, communicating with the chamber 4, and thence passes around the exterior of the shell 6 of the boiler and to the tubes 13 and out of the perforations in the tubes 15. By this means whatever heat is extracted from the shell of independently of the blower.

densed by the cooling action of the air from by the engine is relieved of a great deal of back pressure which would otherwise result. The upper ends of the tubes 7 project beyond the inner casing 6, so that any water which may be condensed will not flow back into these tubes, but will drip onto the inclined partitions 21 and be carried by a pipe 26 into the reservoir 27. If any water should pass into the channel 24, it is carried downward by a pipe 28 into the reservoir 27. Under ordinary conditions the exhaust of the remaining steam is sufficient to discharge the gases from the smoke-box, while inasmuch as the violence of the exhaust is greatly reduced by the means above described the loss of heat which results from drawing the hot gases with great velocity through the tubes is avoided, allowing time for the proper heating of the tubes and of the surrounding water.

When it becomes necessary to use the exhaust in the ordinary way, the throttle-valve 30 may be opened. It is preferable to so connect the valve 30 with the starting-valve of the blower-engine that when one is opened the other may be closed, but so that the exhaust-valve can be opened without interfering with the blower-engine. This can be done by the arrangement shown in Fig. 4. In this figure the rod 31 is attached to the lever 32 of the engine stop-valve 33 and reaches into the cab of the engine with a suitable handle 34. The rod 31 is provided near its end with a number of notches 36, which engage into the locking-piece 35. Near the handle 34 the rod 31 is provided with screw-thread 37, on which turns the screw-wheel 38. To the hub of the wheel 38 is attached the rod 39 by means of a pin and loose collar 41. The outer end of the rod 39 is connected with the lever 40 of the exhaust-valve 30. It will be seen that by shifting the rod 31 from one notch to the other the rod 39 is also shifted and also the valves 30 and 33. By turning the hand-wheel 38 in one direction or the other the throttle-valve 30 can be opened or closed independently of the blower-engine, and by these means the engineer can use the exhaust The water conthe blower being collected into the reservoir 27 is carried by the pipe 42 to the injector of the engine by which it is forced into the boiler again.

It will be seen that by the use of a condenser and by collecting the distilled water the boiler can be supplied with such water, (at least in part,) so that incrustation is greatly reduced and the life of the boiler prolonged.

It will further be seen that by supplying the space below the fire-box with hot air it is possible to insure any desired rapid combustion without the violent withdrawal of the gases through the tubes which results when the ordinary exhaust'is employed for this pu rpose and which is extremely wasteful.

Without limiting ourselves to the precise construction and arrangement of parts, we claim as our invention 1. The combination with a locomotive boiler and its smoke-box, of a surrounding lagging and an intermediate chamber,a chamber arranged in advance of the smoke-box and communicating with said intermediate cham ber, and means to force air through the chamber in advance of the smoke-box to the intermediate chamber, substantially as set forth.

2. The combination with a locomotiveboiler and its smoke-box, of a surrrounding lagging and intermediate chamber, a chamber in advance of the smoke-box, a conical deflecting-plate between said chamber and smoke-box, said chamber having openings 12 communicating with the said intermediate chamber, and means to force air against the deflecting-plate and through said openings, substantially as setforth.

3. The combination with a locomotiveboiler, its lire-box and grate, and its smokeboX, of a surrounding lagging and intermediate chamber 4, a chamber in advance of the smoke-box comm unicating with said chamber 4, and means to force air through said chambers and between the grate-bars to the firebox, substantially as set forth.

4. The combination with a locomotive boiler, its smoke-box and fire-box, of a surrounding lagging and intermediate chamber 4, a chamber in advance of the smoke-box communicating with the chamber 4, a condenser in the chamber in advance of the smoke-box, and means for forcing a current of air over the condenser and through the chambers to the fire-box, substantially as set forth.

5. The combination with a locomotiveboiler and its smoke-box, of a surrounding lagging and an intermediate chamber 4, a conical plate 5 forming the forward end of the smoke-box, the casing of the latter being extended beyond the plate to form a chamber and having openings 12 therein communicating with the chamber 4, and means to force air against said plate and through the openings into the chamber 4, substantially as set forth.

6. The combination with a locomotiveboiler, of a condenser arranged beyond the end thereof, a channel leading from the exhaust to the tubes of the condenser and from the latter to a nozzle 25 below the stack, and means for forcing air over the exterior surface of the condenser-tubes, substantially as set forth.

7. The combination with a locomotiveboiler and its fire-box, of a chamber beyond the end of the boiler, a condenser within said chamber, a channel leading from the exhaust to the tubes of the condenser, and from the latter to a nozzle 25 below the stack, a passage leading from said chamber to the firebox, and means to force air into said chamber over the exterior surface of the condensertubes and from the chamber to the fire-box, substantially as set forth.

8. The combination with a locomotiveboiler, of a condenser arranged beyond the end of said boiler, and a channel leading from the exhaust to the tubes of the condenser and from 'the latter to a nozzle 25 below the stack, substantially as set forth.

9. The combination with a locomotiveboiler and with a channel, 20, communicating with the exhaust, of a condenser having vertical tubes, chambers 19 and 22, an exhaustnozzle 25, and channel 24: communicating with the lower ends of a portion of the condenser-tubes, substantially as set forth.

10. The combination with a locomotiveboiler, of the shells 3 and 6, partitions 21, vertical tubes 7, reservoir, and connections whereby the condensed water passing from the condenser is received by the reservoir, substantially as set forth.

11. The combination with a locomotiveboiler and with its exhaust and exhaust-valve 30, of a blower for forcing air below the grate bars of the boiler, an engine for operating said blower and provided with a stopping and starting valve, and connections between the valve of the engine and exhaust-valve whereby one is closed as the other is opened, substantially as set forth.

12. The combination with a locomotiveboiler and with its exhaust and exhaust valve 30, of a blower for forcing air below the gratebars of the boiler, an engine for operating said blower and provided with a stopping and starting valve, connections between the valve of the engine and exhaust-valve whereby one is closed as the other is opened, and means for operating the exhaust-valve independ ently when required, substantially as set forth.

13. The combination with a locomotive boiler, exhaust and exhaust-valve, of a con denser, a channel leading to the latter from below the exhaust-valve, and a nozzle sur rounding the exhaust-valve and also communicating with the condenser, substantially as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FRANZ BURGER. HENRY M. WILLIAMS.

Witnesses:

GEO. D. CRANE, J. B. RYAN. 

